I posted some time back on my A/C not putting out enough cold air. Yesterday, 10/05, I took my JGC back to the dealer and the tech re-flashed the A/C Computer using the TSB, wow, what a difference! Tons of real cold air now! My Dealer treated me with Kid Gloves, I watched the whole operation, taking apart my whole dash, to install my new TCM. I even test drove my own vehicle, tested the results, wow, shifts are much quicker, and controlled by throttle more than before. I'm hoping this removes the 1-2 shift hesitation, sluggish other shifts. I'll be testing it more later this weekend and 10/14 at the Drag Strip. so far both things are a major improvement! Gene:D

I'll post my final test results and other comments. This TCM is a very recent version from DCX Eng and a very high up person in the SRT Eng staff told my source about it? This problem has plagued most of the SRT Vehicles and asked the Engs at the NATS. I'm happy my Dealer will work with me on my JGC. No Dealers will let anyone in their shop, talk directly to the Tech doing the work, and do the test drives! Paying Big Bucks does have some advantages, Sticker-Plus! TC Gene

I'll post my final test results and other comments. This TCM is a very recent version from DCX Eng and a very high up person in the SRT Eng staff told my source about it? This problem has plagued most of the SRT Vehicles and asked the Engs at the NATS. I'm happy my Dealer will work with me on my JGC. No Dealers will let anyone in their shop, talk directly to the Tech doing the work, and do the test drives! Paying Big Bucks does have some advantages, Sticker-Plus! TC Gene

Crap, which dealer is this. I would drive a few extra miles to get this kinda service. It's hard to find good reputable dealers these days. Ones that put the customer first before anything.

Now your TCM is a new one from the dealer not GSM right?... Let us know how it works out for you... Thanks!!!

Is the TCM change the one that will make it upshift at redline when using autostick???

The A/C TSB has been out for some time and if you take your truck in and tell them you need the latest TSB they walk out with the Scanner and load them.

I dont know what tranny problem the Jeep has?? Mine shifts firmly in every gear and under hard braking you can feel and hear the tranny downshift.....mine has NEVER shifted sloppy.

So did they completely replaced your TCM, or did they just flash it with an update?

Last time I was at the track it took my trans at least 1 full second to shift from 1-2, and then bounced off the rev limiter shifting from 2-3. This is with the gear selector in D, not Autostick.

Please let us KNow if your transmission is better.

Well Folks Here's the Results: over 20 WOT Runs, 12 at the Drag Strip Sat. 10/14. My best run: 13.325 ET, 1.893 60', 102.68 mph! "That's Cooking with SkelGas" Engine roars like never before, feels like more power is getting to the tires, NO MORE SHIFT HESITATION, NONE, NADA! 3-4, 4-5 shifts are firmer. However I did install a 190* thermostat that cools the engine more, and ran in very cool air but the over 1 mph faster trap time speaks for itself! More HP getting to the ground! MHO Gene

Do you think the TCM reflash is necessary for a 07 or do you think they already compensated for this?

Gene,

Was the TCM replaced completely, or just reflashed? What was the Flash software info (if you have it)? Thanks.

Do you think the TCM reflash is necessary for a 07 or do you think they already compensated for this?


I'd like to know also.

I don't know if the 07 has this change but some WOT pulls will tell all. My shift hesitation first happened at 650 miles, while on the Drag Strip and only did it there or on-ramps from a stop. I discussed this with one Eng at the Nats, it didn't happen there because of the ambient temps near 100* that robbed HP from the pull. A big difference so far in my shifts. Some LX Owners asked this question at the Nats, No Answer was Known then? I think it was a design to soften shifts at WOT to help prevent drive line torque, my opinion. Gene

Well Folks Here's the Results: over 20 WOT Runs, 12 at the Drag Strip Sat. 10/14. My best run: 13.325 ET, 1.893 60', 102.68 mph! ....speaks for itself! More HP getting to the ground! MHO Gene

Gene,
Thats great, wish you all the best.
Just to refresh us, what are the mods on your vehicle in addition to the TCM reflash which you just did.
Thanks

Your lucky you have a good dealer, I took mine in for the first oil change and when I got it back the steering wheel was off to the right. I even waited for it, don't know how you can do that driving 200 feet.:mad:

is the tcm # 18-012-05??? on http://www.wkjeeps.com/wk_tsb.htm#PERFORMANCE

No that isn't the one. I got this information from another tuner and came from SRT Eng. Don't know if it is a coming TSB or not but will advise all after finding out? HTH Gene PS. I too worry after taking my JGC in to the Dealer, have experienced many bad issues too!

Gene,
Thats great, wish you all the best.
Just to refresh us, what are the mods on your vehicle in addition to the TCM reflash which you just did.
Thanks My mods so far; MagnaFlow X Muffler, stock rear exhaust, 190* thermostat, everything else is stock. My best Drag Strip times: 13.325 ET 1.893 60' 102.68 mph. I know more is left in the performance tune. HTH Gene

when you find out let us know because i went to my dealer and asked them to search for any TSB's on the gcsrt8 and they said they found nothing. so either they're bullsh*tin me or they didnt get any updates yet. i dont know thanks

They are BSing you. There is at least one for the front windshield. I was called last month about it. Took the Jeep in for an oil change and the dealer pulled the info and ordered the part. It will be ready for my next service visit. I am not worried about it because I do not have any problems from my windhield at speed. This has something to do with noise from the windshiled at speed.

Here is another one for the transmission

http://www.wkjeeps.com/tsb/tsb_wk_2100506.pdf

Do you have the part number for the TCM that was put in your vehicle?

ya i would like that also so i can confront my dealer and tell him exactly what to fix

I've seen posts about this "shift hesitation" TSB but have yet to see someone post the actual TSB. I had a dealer do a search and came up with nothing for a shift hesitation. There is one for the "whine" in the tranny. Anybody know what the deal is????

I've seen posts about this "shift hesitation" TSB but have yet to see someone post the actual TSB. I had a dealer do a search and came up with nothing for a shift hesitation. There is one for the "whine" in the tranny. Anybody know what the deal is????


It is not released yet - it will be imminently. People having difficulties with the tranny are replacing the whole TCM and flashing it with the latest software.

then what was the tsb 'SRTJeep' used

then what was the tsb 'SRTJeep' used

It doesnt exist........

i have a question (since i don't have an SRT8 yet)....

when you place the transmission in AutoStick mode, will it still downshift to a lower gear if you nail the throttle?

if so, it seems to me like manual mode is no different than older AT's where you could just put the shifter down to 3-2-1 (basically just a top gear selector)... what's the point of usint AutoStick mode then?

in a real MT car (which i assume is what a manual mode AT is trying to emulate), it's not going to drop a gear when you floor it, so why should the manual mode on an AT car?

in my G35 coupe, if you leave the car in manual mode and go WOT, the car will NOT shift for you under ANY circumstances, even if you smack the rev limiter repeatedly, nor will it downshift if you floor it in a higher gear. it is a true "manual" mode in which you select the gear you want and it keeps that gear no matter what. (except when you stop it drops back to 1st).

i have a question (since i don't have an SRT8 yet)....

when you place the transmission in AutoStick mode, will it still downshift to a lower gear if you nail the throttle?

if so, it seems to me like manual mode is no different than older AT's where you could just put the shifter down to 3-2-1 (basically just a top gear selector)... what's the point of usint AutoStick mode then?

in a real MT car (which i assume is what a manual mode AT is trying to emulate), it's not going to drop a gear when you floor it, so why should the manual mode on an AT car?

in my G35 coupe, if you leave the car in manual mode and go WOT, the car will NOT shift for you under ANY circumstances, even if you smack the rev limiter repeatedly, nor will it downshift if you floor it in a higher gear. it is a true "manual" mode in which you select the gear you want and it keeps that gear no matter what. (except when you stop it drops back to 1st).
If the Jeep is in manual mode it will not down shift on its own or up shift on its own. It will tell you when to upshift if your going full throttle, but if you dont, you willl hit the rev limiter.

If the Jeep is in manual mode it will not down shift on its own or up shift on its own. It will tell you when to upshift if your going full throttle, but if you dont, you willl hit the rev limiter.oh, that's my mistake then.... i thought i was reading on here somewhere that:
1. if it's in "3" for example and you nailed it, it would drop to 2 or 1.
2. if the tranny was about to hit the rev limit that it would trigger an automatic upshift

ya i would like that also so i can confront my dealer and tell him exactly what to fix

I called my Dealer yesterday and talked to the Service Manager and told him about some of the TSB's that are talked about on this board. And he went on to tell me that I was full of **** and that I was making these up. He asked me for my VIN# and ran it and he came up with one TSB for the windshield. And he said that's all he'll fix. So what do I need to do to get the point across to this turkey?... I have never had problems with this guy before, and he usually is really cool and he knows about my Jeep. Maybe the guy was PMSing yesterday. I don't know. I have an early 06' Build. TFYA.

try slipping him a C note. That usually does the trick.

I called my Dealer yesterday and talked to the Service Manager and told him about some of the TSB's that are talked about on this board. And he went on to tell me that I was full of **** and that I was making these up. He asked me for my VIN# and ran it and he came up with one TSB for the windshield. And he said that's all he'll fix. So what do I need to do to get the point across to this turkey?... I have never had problems with this guy before, and he usually is really cool and he knows about my Jeep. Maybe the guy was PMSing yesterday. I don't know. I have an early 06' Build. TFYA.

I know there are tranny shift problems with the LX platforms, and the Jeep can exhibit some of the same issues, but I doubt a new TCM is the answer. I think a TCM reflash might do the trick, but until it's officially a TSB I don't think any dealer is going to investigate this. Supposedly there is a TSB coming to fix the tranny problems in the LX platform, but I'm not sure if anyone said this will work for the Jeeps models as well.

Check here for updates and the latest TSB's:

http://wkjeeps.com/wk_tsb.htm

When the TSB does come out, try another dealer. Unfortunately dealers don't always know what they are talking about either. I had a TSB in my hand showing the dealer, and they still didn't believe me.

...or you could just PM Gene the undercover gear-head to find out what's going on in the secret world of Jeep SRT-8's... ;)

I know there are tranny shift problems with the LX platforms, and the Jeep can exhibit some of the same issues, but I doubt a new TCM is the answer. I think a TCM reflash might do the trick, but until it's officially a TSB I don't think any dealer is going to investigate this. Supposedly there is a TSB coming to fix the tranny problems in the LX platform, but I'm not sure if anyone said this will work for the Jeeps models as well.

Check here for updates and the latest TSB's:

http://wkjeeps.com/wk_tsb.htm

When the TSB does come out, try another dealer. Unfortunately dealers don't always know what they are talking about either. I had a TSB in my hand showing the dealer, and they still didn't believe me.

...or you could just PM Gene the undercover gear-head to find out what's going on in the secret world of Jeep SRT-8's... ;)

That dealer stuff you just said... you got that right... they really try to abuse their supposed power... I don't know what to do now... so many options... arghhh!!!

There is NO TSB on the tranny. You can look up the TSB's (WKJeeps.com) make a copy and walk it into the dealer.......they will then download it. I've done that EVERY time on is out that affects my vehicle.......of course I tell them it has the symptoms as well.

If you have all the time in the world of course you can grind them down to look at it.....

Sorry Folks but there is a new updated version TCM for the JGC SRT8. My Dealer's Part Dept ran the P/N an wella the latest version found is what was installed in my Jeep. Does it work? YOU BET! No more delayed shifts ever, crisper shifts and firmer down shifts. Is it the same as the LX one? Don't know? All the Dealer Hype is BS, my dealer went to bat and installed it in my Jeep. (#6 JGC SRt8 built on the current assembly line) This isn't a RE-FLASH! A brand new VERSION. My TCM had several stored fault codes and therefore was replaced under warranty. I watched the Tech do the scan on the Star-Scan and saw the trouble codes displayed. Gene

Then all you have to do is get out your repair ticket & post the PN for the upgrade TCM. That shouldn't take too long to do.

Sorry Folks but there is a new updated version TCM for the JGC SRT8. My Dealer's Part Dept ran the P/N an wella the latest version found is what was installed in my Jeep. Does it work? YOU BET! No more delayed shifts ever, crisper shifts and firmer down shifts. Is it the same as the LX one? Don't know? All the Dealer Hype is BS, my dealer went to bat and installed it in my Jeep. (#6 JGC SRt8 built on the current assembly line) This isn't a RE-FLASH! A brand new VERSION. My TCM had several stored fault codes and therefore was replaced under warranty. I watched the Tech do the scan on the Star-Scan and saw the trouble codes displayed. Gene


I've got to sneeze....aaaaahhhhhhbullsh*t.........

Believe it or not, sneezes come from the Blue Site Poster, Now Here Again! A warranty replacement must have a stored trouble code? I got the version P/N from a source at SRT Eng through another person. Heard it was a AMG Part? (can't verify that) Will it work on a LX? Don't know? If anyone can prove me wrong on this posting then do it! SOURCES, ETC. I'm open but can prove my point. Solved my problem and woke up my engine power! This problem was discussed at the Nats with the Engs, several others had the same problem but mostly with the LX Cars, only 3 JGC SRT8 were there. Mine had the slow 1-2 shift problem and sometimes hit the rev limiter, at the Drag Strip under WOT pulls. Gene PS. Another Jeep Dealer here in the twin cities stocked this part! I wonder why?

Believe it or not, sneezes come from the Blue Site Poster, Now Here Again! A warranty replacement must have a stored trouble code? I got the version P/N from a source at SRT Eng through another person. Heard it was a AMG Part? (can't verify that) Will it work on a LX? Don't know? If anyone can prove me wrong on this posting then do it! SOURCES, ETC. I'm open but can prove my point. Solved my problem and woke up my engine power! This problem was discussed at the Nats with the Engs, several others had the same problem but mostly with the LX Cars, only 3 JGC SRT8 were there. Mine had the slow 1-2 shift problem and sometimes hit the rev limiter, at the Drag Strip under WOT pulls. Gene PS. Another Jeep Dealer here in the twin cities stocked this part! I wonder why?

Cool for you...now will you share the p/n with the rest of us?

Gene, you continually amaze me. Why would you even to bother to post a reply about the P/N without posting the P/N? Either you have the P/N or you don't. Why does it always have to be so difficult/secretive with you?:confused:

Gene, you continually amaze me. Why does it always have to be so difficult/secretive with you?:confused:


PM me for the answer...:p

Folks, I'll gladly share it with anyone. PM me for the answer and reason not to openly post this info. There is a good reason. Gene

I shared this info to 8 people so far. Good Luck. Make sure your Dealer does the correct update. New update from late summer. GL Gene

:( Sigh. Here we go again.:rolleyes:

Larry, just PM Gene, then you will get the goods!

I spoke too soon, I PM'd Gene and he has not responded! Oh well, shift hesitation is better than no shifting at all :rolleyes:

maybe he hasn't checked his PM's??? I've been waiting two days for a reponse also

Sorry folks for not getting back sooner but all the PM's have been answered. Any flack from the Dealers just say it has helped my Jeep and others. A possible TSB will be coming? When? Advanced info. HTH Gene

Thanks for the info, Gene.

I have an appointment at the dealer 11/22 to have my TCM re-flashed. We shall see if they do it right or give me the slack jawed stare :eek:

Thanks Gene. I will be heading to the dealership on Friday.

Bump!

Anyone else give this a try yet?? SRTJeep...how is your street drivability with the re-flash?? Thanks...